Heitles and eugene wald i



E. WALDMANN AND S. HOKKY.

STOVE AND FURNACE. APPLICATION FILED 001131. 1921.

Patented Aug. 22;, 119220 2 SHEETSSHEET I.

E. WALDMANN AND 3. HOKKY. STOVE AND FURNACE.

APPLICATION HLED OCT: 3h I92!- I 1,4Q6,674;.- Patented Aug. 22, 1922,

2 SHEETS-SHEET 2- FATENT @FFHQFL nitric wannivrnivn aivn s'rnrnmv HOKKY, or BUnArns'r,

MESNE ASSIGNMENTS, T0 CHARLES HEITLER AND EUGENE WALDMANN, BOTH OF CHICAGO, inninois.

T 0 all whom it may concern:

Be it known that we, Emvo YVALDMANN and STEPHEN Honky, citizens and subjects of the Government of Hungary, and residents of Budapest, Hungary, have invented certain new and useful Improvements in toves and Furnaces, of which the following is a specification.

This invention relates to stoves or central heating plants of the magazine type and has for its object the construction of a stove or heating plant of this character whereinall species of fuel irrespective of quality or shape or size may be readily-and efiiciently consumed.

YVith the above and other objects in view, as will be apparent, this invention consists in the construction, combination and arrangement of parts all as hereinafter more fully described, claimed and illustrated in the accompanying drawings wherein Fig. 1 is a central, vertical section of a stove constructed in accordance with the present invention.

Fig. 2 is a similar view, being a section taken along line 2-2 of Fig. 1.

Fig. 8 is a central, vertical section of a central heating plant or furnace embodying the present invention.

Fig. 4% is a vertical section of the cone grate.

Fig. 5 is a horizontal .sectional'view taken along line 55 of Fig. 2 illustrating the grate in plan.

Fig. 6 is a fragmentary exterior view of the stove or furnace casing, showing part of the means of adjustment of the grate ring used in the form of the invention disclosed in Fig. 3.

Fig. 7 is a fragmentary inner view of the grate ring illustrating further details of the means for adjusting the same.

Heretofore stoves or central. heating plants of the magazine type have been designed for the consumption of one species of fuel only, and have, a consequence, been useless in conjunction with fuel of any other characteristics than that for which it was designed without radical reconstruction or at least a change of grate. Furthermore, the stoves or central heating plants which have gone before the present invention have been incapable of any adjustment of the fuel feed whereby the quantity consumption of fuel could be regulated, or the removal of the ashes, slag and clinkers may be facili- Specification of Letters Patent.

Patented An 22, 1222.

sci-m1 No. 511,928.

tated. The presentinvention is designed to overcome these disadvantages by providing a stove orcentral heating adjustable to operate on and consume all HUNGARY, ASSIGNOBJS, BY

plant which is;

types andspecies of fuel as well as regulate accurately the feeding of such fuel to the gr t In carrying. out the present invention, reference being had particularly to Figs. 1, 2, a and 5 of the drawings, 10 designates the casing of a stove resting on the base 11, whereby the stove is supported away from the floor. Located within this casing 10 and concentrically arranged with respect thereto is the fuel magazine supported in said casing by the intermediate jacket 13 which also encloses the combustion chamber 1 1. The-upper end of the magazine 12. communicates with the lateral chute 15 which extends to and through the casing wall where it is closed by the door, 16 and provides a means of supplying the magazine with fuel. At its upper end the combustion chamber 1 1 is closed by an end wall 17 through which the magazine 12 projects and said chamber communicates at such closed end with the conduit 18 for conducting the gases, smoke and other products of combustion through the. casing wall to the stack or chimney (not shown).

The stove is equipped with the usual top 19 suitably fastened to the upper end of the casing 10 and having the heated air distribution openings 20 therein at various points in its surface. Adjoining the lower end of the intermediate jacket 13, the wall of the casing 10 is pierced by a ring of air admission openings 21 through which. the fresh unheated air enters the chamber 22 between the jacket 13 and the casing 10 where it is heated and rises to the top 19 to pass out the heated air distribution openings 20.

A draft tube 23 extends from the center of the top 19 to the upper end of the magazine 12 where it-communicates with an eX- tension tube2l passing through and beyond the lower end of the magazine 12. The upper end of the draft tube 23 co-operates with the cap valve V composed of the fixed member 25 and the rotatable member 26, said members beingoprovided with the apertures 27 and 27 respectively, the degree of registration of which, obtained by the adjustment of the 3 rotatable member 26, determines the quantity of air admitted-into the 12, terminating short of the ends of the casing 10 but being dry distillation in the magazine 12.

The grate, upon which combustion takes place, is carriedor-arranged at the lower end of the extension tube 24, so that the air passing downwardly through this tube is released on the interior of the grate and hence creates a draft by passing through the fuel on the grate and to the combustion chamber 14 and out the conduit 18. This grate, denoted generally as G and illustrated in detail in Figs. 4 and 5, comprises a collar 29 embracing the lower end of the extension tube 24 and carrying the radiating spider arms 30'on theunder side thereof. In order to create the conical grate G, the

outer edges of these arms 30 incline inwardly and upwardly toward the collar 29. The lower or under relatively horizontal edges of the spider arms 30 at their junction form a socket-31 which has a projecting continuation in the form of a bushing 32. Aligned with the bushing 32'and in the bottom 33 of the casing 10 is a vertical bearing I 34 for the shaft 35, said shaft entering the bushing 32 and socket 31 where and to which it is fixed in any suitable or standard manner. The lower end of the bushing 32 rests on the upper end of the bearing 34, and by this mounting the rotation of'the shaft 35 in turn rotates the bushing 32 and spider 30 together with all parts and elements carried by the said spider. The lower end of the extension draft tube 24 merely acts as a guide and axis for grate G in its rotation.

The construction of the grate Ur, per se, comprises a horizontal base grate plate 36 fixed to and outstanding from the edges of the spider arms 30 to which it is secured at the lower or widest extremities thereof. To facilitate the discharge of the ash into the pit 37 from the grate G, the base plate 36 of the latter is provided with a series of relatively transverse and somewhat radiating openings 38, which permit the ash falling on to the base plate 36 to pass through the same into the pit 37 from which it is removed through opening 39 in the wall of the casing 10 and having the closure 40. Mounted on the spider arms 30' and constituting a continuously enlarging spiral from the collar 29 to the base grate plate 36, is the rib 4]. which comprises the conical body of the grate Gr and on which the combustion takes place. As will be observed from the drawings, the convolutions of the rib 41 rest substantially horizontally, project one over the other, and are relatively spaced, thus there being provided a conical grate which will support the fuel during the combustion and allow the ash to be removed and a draft to circulate down the tubes 23 and 24 through the convolutions of the rib 41, the burning fuel, the chamber 14 and out the conduit 18. By reason of the provision of the circulation openings 28 in the extension tube 24 the gases which may distill or accumulate in the magazine 12 are drawn into the tube 24 and are passed through the grate where they are either burnt or discharge out the conduit 18.

The lower end of the grate shaft 35 projects beyond the bearing 34 and has a worm gear 42 keyed thereto for rotation from the shaft 43 through the medium of the worm 44 keyed to said shaft and meshing with the gear 42. This shaft 43 is rotated by means of the crank 45 or any other suitable means, such as a motor, to remove the ashes, slag or'clinkers, as will be hereinafter more fully described.

' Mounted for reciprocation on the bushing 32 is a sleeve 46 carrying the outstanding, radiating, supporting bars 47, which are bent upwardly as at 48, at their outer ends and provided with inwardly sloping surfaces at the terminals for the mounting of an oblique grate ring 49 secured'to these inwardly sloping terminals of the supporting bars and which is so held thereby that it extends from thewall of the casing 10 to the periphery of the grate base plate 36. When the sleeve 46 is at the upper end of its path of movement, the space between the inner edge of the ring 49 and the outer edge of the grate base plate 36 will be then relatively small or entirely closed. As the sleeve 46 moves downwardly on the bushing 32 thespace between the ring 49 and plate 36 increases and its size can be regulatedby adjusting the position of the ring 49 thereby creating a positive regulation in accordance with the species of fuel and the size and quantity of ash, slag, etc.

The position of the sleeve 46 on the bushing 32 is determined by the shaft 50 mounted through the pit 37 for oscillation by the handle 51 on the exterior of casing 10. Medially of its length, this shaft 50 carries the levers 52 fixed thereto and projecting to points under the lower end of the sleeve 46 against which they bear on opposite sides of said bushing. The entire element made up of the sleeve 46, the bars 47, and ring 48 rests on these levers 52, so that as they are raised by the movement of the shaft, so will this element be raised, and as they are lowered, a similar movement of the element will take place.

The wall of the casing 10, adjoining the grate G is pierced by an opening 53 having a suitable closure 54, by means of which, upon opening said closure,-access -may be had to what may be called the fire box for starting combustion or cleaning or any like purpose.

In order to regulate the supply of fuel to the grate G and to accommodate the stove to fuel of various kinds, the lower end of the magazine is'surrounded by an extension 55 projecting beyond the magazine end and tapered at 56 toward the tube 24L and grate G, adjacent which it terminates. This extension 55 is designed for a sliding movement relatively to the magazine 12 and for this purpose is suspended on the link 57' secured at its lower end to the upper end of the extension 55 and at its upper end to the free terminal of the arm 58 fixed to the shaft 59 arranged transversely of the upper end of the casing 10. At one end the shaft 59 projects from the casing 10 where it is provided with a handle 60 for the oscilla' tion thereof which movement raises and lowers the extension 55 from and to the grate G, the distance of the movement of said extension being dependent on the degree of oscillation of the shaft 59.

In operation, the magazine 12 is loaded or chargedthrough the chute 15 with fuel such as coal, comminuted coal, sawdust or in fact any fuel where it gravitates to the extension 55 of said magazine and rests on the grate G. This fuel is then distributed over the grate G under the tapered mouth 56 of the extension 55 where it is supported, during combustion, on the convolutions of tie rib 4C1 of said grate G, and from which the ash and slag together with any unburned fuel drops to the base plate and the grate ring 19 to be further consumed and then discharged to the pit 3''? either through the openings 38 in said plate or through the space between the ring 49 and the grate base plate 36. The position of the extension 58 of the magazine 12 with respect to the grate {it determines not only the quantity of fuel fed to the grate, but also regulates the stove for the accommodation of fuel of various sizes and characters, for it is clear that the greater the distance of the extension 55 from the grate G, the greater the fuel in quantity and size fed," while reversely, the smaller this distance, the smaller the fuel in size and quantity fed. .t is manifest that the position of this extension may be freely adjusted during combus ion or, in fact, at any time, and thus the stove may be adapted for varying fuels without reconstruction or change in parts.

lVhen it'is desired to clean the grate, the grate ring 19 may be lowered as heretofore described and the grate rotated which will. precipitate the residue on the ring 49 and base plate 36 into the pit 37, Of coune, the ring 4:9 may be maintained in a partly lou ered position, if desired, and the grate may also be rotated without lowering the ring for the purpose of agitating the fire and asthe hand wheel 61 mounted sisting the feed of the fuel, and for removing the ash through opening 88 in the base plate 36.

The form of the invention disclosed in Figs, 3, 6 and T is not materially or essentially different from th form heretofore described and illustrated in Figs. 1, 2, t and 5, except in details of construction and the adaption of the invention to a central heating plant. Here the casing 10, has the fuel magazine which extends completely to the upper end of the casing 10 where it connects with a diagonal chute 15, leading to the top of the casing and closed by the door ic A, single draft tube 24: passes completely through the magazine 12 to a position where it cooperates with grate G in much the same manner does the tubeZet of the form in Figs. 1, 2, and The upper end of the tube 2% projects beyond the top of the casing 10 to co-act with the members 25 and 26 of the valve V for the regulation of the draft through said tube 24 The combustion chamber 141 is located between the magazine 12 and the casing 10 and has a water jacket or boiler (31 supported therein by the webs 75 and to which water is fed throu 'h the supply pipe 62 for circulation through the jacket or boiler 61 to be heated for conversion into steam or hot water be fore delivery to the tank. 63 from which the hot water or steam is distributed.

at its lower end, the magazine is surrounded by the relatively slidable extension having the tapered mouth 56 co-operating with grate G at its lower terminal, and the link attached to its upper terminal by means of which said extension is suspended from the free end of the lever 6 1 pivotally mounted on the shaft 65 arranged transversely of the upper end of the casing 10, said linl: being pivoted to the free end of the lever 6% for this purpose. In order to and lower the love (i i and consequently the ma 'azine extension the lever has a threaded rod pivoted thereto medially of its ends to project upwardly through the top of the Ct 10 for co-operation with l to rotate in the bushing 68 lnit held from bodily movement by the set screw 69. l i hen the hand wheel 6? is rotated, the lever 6 1- will be raised and lowered according to the direction of rotation, due to the action of the cooperating threads moving the rod 66 relatively to said hand wheel, and the extension 55 will, as a consequence, likewise be raised and lowered.

The ail-ate in this form of the invention is in uch the same in construction and is very similarly mounted to the grate in that form of the invention disclosed in Figs. 1, 2, 1: and 5. A frame '1' O is on the bottom 33 of the casing 10 and a bearing 71 aligned with the bearing 3 i in the bottom 33 for the mounting of the shaft 35, said framealso cooperating with the grate G as does the bearing 34 in Figs. 1, 2, 4 and 5 In this form of the invention, the grate base plate 36 slopes downwardly at its outer edge for co-action with the relatively movable oblique grate ring 5 9 which surrounds the grate G and occupies the space between the base plate 36 of the grate and the casing 10.

The adjustment of the grate ring 49 is accomplished by the rollers 72 mounted at intervals on the interior of the casing 10 and on which rests the vertical flange sections 78 on the outer and upper edge of the ring l9f, said flange sections '23 being cut away adjoining each roller 72 to create the oblique or cam surfaces 74 to ride on said rollers. A staggered upwardly inclined slot 76 pierces the walls of the casing 10 in the approximate horizontal plane of the grate ring 49 and'a handle 77 fixed to said ring is arranged to ride in said slot and provide a medium whereby said ring may be oscillated manually. The movement of the ring 49 in one direction causes the cam surfaces 74 to ride upon the rollers 72 and raise the ring 49 to the dotted line position, Fig. 3; whereas the movement of the ring in the opposite direction causes the cam surfaces 74 to ride on the rollersZQ and thus lower the ring 49 to occupy the full line position in Fig. 3, or any intermediate position.

The various adjustments and the operations-of the elements in this form of the invention are the same as in the form illustrated in Figs. 1, 2, t and 5 as to function and purpose and differ only as to construction as pointed out. While the foregoing describes, and the drawings illustrate the preferred form of this invention, it is to be understood that the same may be modified, varied and changed without departing from the spirit and scope hereof.

What is claimed is 1. The combination with a casing, of a fuel magazine mounted therein and spaced therefrom, an extension at the lower end of said magazine adjustable relatively thereto, a draft tube extending through the magazine from the upper end of said casing to the lower end of said magazine, a collar embracing the lower end of said tube, a series of radiating spider arms carried by said collar having their outer edges sloping inwardly to said collar and provided with a socket in the under side of their junction, an outstanding grate base plate secured to the lower extremities of said spider arms, an outstanding rib extending spirally from the collar to the base plate having the con volutions thereof spaced, a shaft fixed in the socket at the junction of said spider arms, means for rotating said shaft, and a grate ring Surrounding the grate base plate and adjustable relatively thereto.

2. The combination with a casing, of a fuel magazine mounted therein and spaced therefrom, an extension at the lower end of said magazine adjustable relatively thereto, a craft tube extending through the magazine from the upper end of said casing to the lower end of said magazine, a collar embracing the lower end of said tube, a

series of radiating spider arms carried by said collar having their outer edges sloping inwardly to said collar and provided with a socket in the under side of their junction, an outstanding grate base plate secured to the lower extremities of said spider arms, an outstanding rib extending spirally from the collar to the base plate having the convolutions thereof spaced, a shaft fixed in the socket at the junction of said spider arms, means for rotating said shaft, a grate ring co-operating with the aforesaid grate base plate, and means for moving said ring bodily with respect to said base plate.

3. The combination with a casing, of a fuel magazine mounted therein and spaced therefrom, an extension at the lower end of said magazine adjustable relatively thereto, a draft tube extending through the magazine from the upper end of said casing to the lower end of said magazine, a collar embracing the lower end of said tube, a series of radiating spider arms carried by said collar having their outer edges sloping inwardly to said collar and provided with a socket .in the under side of their junction, an outstanding grate base plate secured to the lower extremities of said spider arms, an outstanding rib extending spirally from the collar to the-base plate having the convolutions thereof spaced, a shaft fixed in the socket at the junction of said spider arms, means for rotating said shaft, a grate ring obliquely co-operating with the aforesaid grate base plate, and means for adjusting said ring bodily with respect to said base plate.

The combination with a casing, of a fuel magazine therein, draft means extending through said magazine, a grate co-operating with said magazine and said draft means whereby an air circulation is created through said grate, and means for regulating the flow of fuel from said magazine to said grate, comprising an extension on sald magazine terminating adjacent said grate and adjustable relatively to said magazine and said grate.

5. The combination with a draft tube, of a collar cooperating therewith, spider arms radiating from said collar and a rib embracing said arms.

6. The combination with a draft tube, of a collar co-operating therewith, spider arms radiating from said collar and a spiral rib embracing said arms having its convolutions spaced one from the other for the passage of air from said tube between said convolutions.

7. The combination with a draft tube, of a conical grate co-operating therewith at the apex of said grate, and means whereby there may be an air circulation from the tube through said grate.

8. The combination with a draft tube, of a conical grate co-operating therewith at its apex, said grate comprising a series of radiating spider arms carrying an outstanding spiral rib with its convolutions spaced one from the other.

9. The combination with a draft tube, of a magazine surrounding the same, an open conical grate co-operating at its apex with said draft tube whereby air may be circulated downwardly through said tube to and through said grate, and means for conducting the fuel from said magazine to said grate and delivering it thereto adjoining the apex of the grate.

10. The combination with a draft tube, of a magazine surrounding the same, an open conical grate co-operating at its apex with said draft tube whereby air may be delivered to the interior of the grate for circulation therethrough, and adjustable means for conducting the fuel from said magazine to said grate and delivering it thereto adj oining the apex of the grate.

11. The combination with a grate having a grate base plate, of a grate ring surrounding said grate and co-operating with said base plate, and means for adjusting said grate ring relatively to said grate.

12. The combination with agrate,of agrate ring co-operating therewith and adjustable to vary the space between said ring and said grate.

13. The combination with a grate, of an oblique grate ring co-operating therewith and adjustable relatively to said grate.

14c. The combination with a grate, of an oblique grate ring co-operating therewith, and means for moving said grate ring vertically to regulate and adjust the space between said grate and grate ring.

15. The combination with a grate, of a grate ring co-operating therewith, and means for adjusting said grate ring relatively to said grate, comprising a sleeve, arms radiating from said sleeve to support said ring, a shaft, levers fixed to said shaft and supporting said sleeve, and means for oscillating said shaft.

16. The combination with a grate, of a grate ring co-operating therewith, and means for adjusting said grate ring relatively to said grate, comprising means for imparting a rotary movement to said ring, rollers'adjacent said ring and cam surfaces on said ring for co-operation with said rollers during the movement of said ring.

17. The combination with a conical grate made up of a series of spaced convolutions, of a draft tube cooperating therewith to deliver air to the interior of said grate for circulation outwardly through the spaces between said convolutions.

18. The combination with a conical grate made up of a series of spaced convolutions, of a draft tube cooperating with the apex thereof to deliver air downwardly to the interior of saidgrate for circulation outwardly through the spaces between said convolutions.

19. The combination with a fuel magazine, of an open conical grate located below said magazine, adjustable means for spreadthe fuel from said magazine over said grate in a relatively shallow layer, and means for creating an outward circulation through said grate.

' 20. The combination with a fuel magazine, of an open conical grate located below said magazine, an adjustable extension for said magazine, adapted to embrace the apex of the grate and deliver fuel thereto to gravitate over said grate in a relatively shallow layer, and a draft tube connected with the apex'of said grate for creating an outward circulation through said grate.

ERNQ WALDMANN. STEPHEN HOKKY. 

